Discussions By Condition: I cannot get a diagnosis.

4 years and no answers

for the past 4 years off and on i have been getting a rash on my face. It always comes in the same spots they are circle shaped one above my lip is about the size of a quarter, one in the center of my chin is slightly larger than a half-dollar, a dark spot on my jaw line about the size of a dime. Then there is also a spot between my middle and index finger and on the inside of my ear. It starts out red and itching and by the end of the second day all the spots except for my ear and finger begin to blister. The blisters start out like small white heads and progress from there. The blisters then break and form a yellowish crust then the whole cycle begins again. This whole process is about a week long. When it begins to blister it is extremely painful and itches from day one until about a week when the spots are gone. I also have dark colored circles permanently where the episodes happen. My doctor has done biopsies that have come back in-conclusive, I've had countless amounts of blood drawn, HSV 1&2, CBC, ANA, Lupus Testing, HIV testing, Syphilis, etc. all no, no, no, no, and another no.:( i have no allergies that I'm aware of and no one seems to have an answer for me. I'm hoping you all could help, thank you in advance for any ideas.

No fevers, i do have a headache the entire time but i think thats just from stress, family history is simple gandmother with diabetes, aunt passed from cancerDoctors say its not impitego....Thank you all for your help. Oh ive attached a pic too.